HELP! iMac freezes with vertical pixelated lines

Discussion in 'Mac Basics and Help' started by Barnum, Apr 10, 2010.

  1. Barnum macrumors newbie

    Joined:
    Sep 4, 2008
    #1
    My computer (24" 3.06Ghz intel core 2 duo) won't start. When I try to turn on or restart my iMac I get vertical rows of pixelated lines across my monitor on the white startup background with the apple logo and it will either freeze up or the background turns gray and I get a message that says I should restart my computer. This has also happened when restarting using the Apple hardware test (which doesn't report any errors). My warranty has expired so what should I do?

    My computer problem looks similar to this image.

    [​IMG]
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    You're going to have to take it in to the shop anyway. Looks like a logic board failure to me.
     
  3. SophBleep macrumors newbie

    SophBleep

    Joined:
    Mar 7, 2010
    Location:
    Canberra, Australia
    #3
    I agree, sorry but your mac looks a little bit screwed. Hope it can get fixed! i feel really sorry for you. :(
     
  4. Barnum thread starter macrumors newbie

    Joined:
    Sep 4, 2008
    #4
    Financially this couldn't come at a worse time for me. How much should I expect to shell out for a new logic board, or should I consider buying a new computer? If it's the later, I may have to consider getting a (ugh!) windows computer.:(
     
  5. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #5
    My guess would be about $400 for the logic board, but I haven't had a failure in an iMac so I can't say for sure.
     
  6. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #6
    When the logic board in my 2006 20" iMac died 6 weeks out of the limited warranty a few years ago it cost me $550 to replace it.

    Needless to say, I've purchased AppleCare for every Mac I've owned since then.

    That does look like a logic board or GPU failure. If so, it is the same repair in either event: logic board replacement.
     
  7. Barnum thread starter macrumors newbie

    Joined:
    Sep 4, 2008
    #7
    If the computer is shot is it possible to use the imac screen as a monitor for another computer?
     

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